We use a metal disk as arc tube holder, it also can stop lighting emit to two ends directly,

so it can reduce the temperature.

What are the benefits of Double Ended bulbs?

1. Double Ended HPS bulbs degrade slower than traditional single ended HPS bulbs. In fact, after 10,000 hours double ended lamps will still output approximately 90% of their original intensity.

2. Double Ended HPS bulbs are more stable than traditional single ended HPS bulbs, and this allows them to have a 10% increase in light intensity and PAR output over traditional single ended HPS bulbs.

3. Double Ended HPS bulbs emit more UV and IR light than traditional single ended HPS bulbs, increasing the potency and essential oils of oil producing plants.